autohidemanager.java

java写的qq代码实现qq的部分功能

/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma <[e-mail]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.tsinghua.lumaqq.ui.experimental;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseTrackListener;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.events.ShellListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

import edu.tsinghua.lumaqq.ui.MainShell;
import edu.tsinghua.lumaqq.utils.OptionUtil;

/**
 * <pre>
 * 监听主窗口位置，条件满足的时候自动隐藏窗口
 * 
 * 目前在Windows没有问题，但是在linux还是很诡异，所以目前这个类没有用到
 * </pre>
 * 
 * @author 马若劼
 */
public class AutoHideManager implements ControlListener, MouseTrackListener, ShellListener {
    /**
     * <pre>
     * 用来检查鼠标的位置，因为我目前是想不出什么更好的办法
     * </pre>
     * 
     * @author 马若劼
     */
    private class MouseLocationDetector implements Runnable {
        /* (non-Javadoc)
         * @see java.lang.Runnable#run()
         */
        public void run() {
            if(needHide()) {	            
	            Point loc = display.getCursorLocation();
	            if(!currentBound.contains(loc)) {
	                hideShell();
	                showRibbon();
	            } else if(needHide()) {
	                display.timerExec(2000, this);
	            }                
            }
        }
    }
    
    private Shell shell;
    private Display display;
    private Shell ribbon;
    private Rectangle currentBound, showBound, hideBound, historyBound, clientArea;
    private Rectangle ribbonShowBound;
    private OptionUtil options;
    
    private MouseLocationDetector detector;
    
    private int hide;
    
    /**
     * 构造函数
     * 
     * @param main
     * 			MainShell
     */
    public AutoHideManager(MainShell main) {
        options = OptionUtil.getInstance();
        detector = new MouseLocationDetector();
        hide = SWT.NONE;
        hideBound = new Rectangle(0, 0, 0, 0);
        ribbonShowBound = new Rectangle(0, 0, 0, 0);
        
        shell = main.getShell();
        display = main.getDisplay();
        shell.addControlListener(this);
        shell.addShellListener(this);
        
        ribbon = new Shell(display, SWT.ON_TOP | SWT.NO_TRIM);
        ribbon.addMouseTrackListener(this);
        
        historyBound = showBound = shell.getBounds();
    }

    /**
     * @return true表示需要隐藏
     */
    public synchronized boolean needHide() {
        return hide != SWT.NONE;
    }
    
    /**
     * 这是隐藏标志
     * 
     * @param h
     * 			隐藏标志
     */
    private synchronized void setHide(int h) {
        hide = h;
    }
    
    /* (non-Javadoc)
     * @see org.eclipse.swt.events.ControlListener#controlMoved(org.eclipse.swt.events.ControlEvent)
     */
    public void controlMoved(ControlEvent e) {
        autoHide();
    }

    /**
     * 判断情况，如果需要，则自动隐藏
     */
    private void autoHide() {
        currentBound = shell.getBounds();        
        if(currentBound.equals(showBound)) return;
        clientArea = display.getClientArea();
        
        // 如果隐藏标志没有变化，返回
        int newHide = checkCondition(currentBound, clientArea);        
        if(hide == newHide) {
            if(newHide == SWT.NONE)
                historyBound = currentBound;
            return;
        }
        
        // 如果从隐藏到不隐藏，恢复窗口原始大小
        if(needHide() && newHide == SWT.NONE)
            shell.setSize(historyBound.width, historyBound.height);
        
        // 设置新的隐藏标志，采取相应动作
        setHide(newHide);       
        switch(hide) {
            case SWT.RIGHT:
                hideRight();
                break;
            case SWT.LEFT:
                hideLeft();
                break;
            case SWT.TOP:
                hideTop();
                break;
            default:
                ribbon.setVisible(false);
                break;
        }
    }

    /**
     * 在顶部隐藏 
     */
    private void hideTop() {
        showBound.x = currentBound.x;
        showBound.y = 0;
        showBound.width = currentBound.width;
        showBound.height = currentBound.height;
        
        hideBound.x = currentBound.x;
        hideBound.y = -currentBound.height - 1;
        hideBound.width = currentBound.width;
        hideBound.height = currentBound.height;
        
        ribbonShowBound.x = currentBound.x;
        ribbonShowBound.y = 0;
        ribbonShowBound.width = currentBound.width;
        ribbonShowBound.height = 1;
        
        hideShell();
        showRibbon();
    }

    /**
     * 在左边隐藏
     */
    private void hideLeft() {
        showBound.x = 0;
        showBound.y = 0;
        showBound.width = currentBound.width;
        showBound.height = clientArea.height;
        
        hideBound.x = -currentBound.width - 1;
        hideBound.y = 0;
        hideBound.width = currentBound.width;
        hideBound.height = clientArea.height;
        
        ribbonShowBound.x = 0;
        ribbonShowBound.y = 0;
        ribbonShowBound.width = 1;
        ribbonShowBound.height = clientArea.height;
        
        hideShell();
        showRibbon();
    }

    /* (non-Javadoc)
     * @see org.eclipse.swt.events.ControlListener#controlResized(org.eclipse.swt.events.ControlEvent)
     */
    public void controlResized(ControlEvent e) {
    }

    /**
     * 在右边隐藏
     * @param shellBound
     * @param clientArea
     */
    private void hideRight() {
        showBound.x = clientArea.width - currentBound.width;
        showBound.y = 0;
        showBound.width = currentBound.width;
        showBound.height = clientArea.height;
        
        hideBound.x = clientArea.width + 1;
        hideBound.y = 0;
        hideBound.width = currentBound.width;
        hideBound.height = clientArea.height;
        
        ribbonShowBound.x = clientArea.width - 1;
        ribbonShowBound.y = 0;
        ribbonShowBound.width = 1;
        ribbonShowBound.height = clientArea.height;
        
        hideShell();        
        showRibbon();
    }
    
    /**
     * 隐藏被托管的Shell
     */
    private void hideShell() {
        shell.setBounds(hideBound);
        shell.setVisible(false);
    }
    
    /**
     * 显示dummy shell
     */
    private void showRibbon() {
        ribbon.setBounds(ribbonShowBound);
        ribbon.setVisible(true);
    }
    
    /**
     * 显示受托管的窗口
     */
    private void showShell() {
        shell.setBounds(showBound);
        shell.setVisible(true);
        shell.setActive();
    }
    
    /**
     * 隐藏dummy shell
     */
    private void hideRibbon() {
        ribbon.setVisible(false);
    }
    
    /**
     * 判断当前是否需要自动隐藏窗口
     * 
     * @param bound
     * 			窗口的位置和大小
     * @param clientArea
     * 			显示器的大小
     * @return
     *     		如果需要在左边隐藏，返回SWT.LEFT，等等，如果不需要隐藏，返回SWT.NONE
     * 			但是我们不会隐藏到底部    
     */
    private int checkCondition(Rectangle bound, Rectangle clientArea) {
        if(bound.x + bound.width > clientArea.width)
            return SWT.RIGHT;
        else if(bound.x < 0)
            return SWT.LEFT;
        else if(bound.y < 0)
            return SWT.TOP;
        else
            return SWT.NONE;
    }

    /* (non-Javadoc)
     * @see org.eclipse.swt.events.MouseTrackListener#mouseEnter(org.eclipse.swt.events.MouseEvent)
     */
    public void mouseEnter(MouseEvent e) {
        autoShow();
    }

    /**
     * 显示窗口
     */
    public void autoShow() {
        hideRibbon();
        showShell();
        display.timerExec(2000, detector);
    }

    /* (non-Javadoc)
     * @see org.eclipse.swt.events.MouseTrackListener#mouseExit(org.eclipse.swt.events.MouseEvent)
     */
    public void mouseExit(MouseEvent e) {
        // TODO Auto-generated method stub
        
    }

    /* (non-Javadoc)
     * @see org.eclipse.swt.events.MouseTrackListener#mouseHover(org.eclipse.swt.events.MouseEvent)
     */
    public void mouseHover(MouseEvent e) {
        // TODO Auto-generated method stub
        
    }

    /* (non-Javadoc)
     * @see org.eclipse.swt.events.ShellListener#shellActivated(org.eclipse.swt.events.ShellEvent)
     */
    public void shellActivated(ShellEvent arg0) {
        // TODO Auto-generated method stub
        
    }

    /* (non-Javadoc)
     * @see org.eclipse.swt.events.ShellListener#shellClosed(org.eclipse.swt.events.ShellEvent)
     */
    public void shellClosed(ShellEvent arg0) {
        // TODO Auto-generated method stub
        
    }

    /* (non-Javadoc)
     * @see org.eclipse.swt.events.ShellListener#shellDeactivated(org.eclipse.swt.events.ShellEvent)
     */
    public void shellDeactivated(ShellEvent arg0) {
        // TODO Auto-generated method stub
        
    }

    /* (non-Javadoc)
     * @see org.eclipse.swt.events.ShellListener#shellDeiconified(org.eclipse.swt.events.ShellEvent)
     */
    public void shellDeiconified(ShellEvent e) {
        if(needHide()) {
            hideShell();
	        showRibbon();            
        }
    }

    /* (non-Javadoc)
     * @see org.eclipse.swt.events.ShellListener#shellIconified(org.eclipse.swt.events.ShellEvent)
     */
    public void shellIconified(ShellEvent e) {
		if(options.isAutoHide())
			shell.setVisible(false);
    }
    
    /**
     * @return 没有自动隐藏前的窗口位置
     */
    public Rectangle getHistoryBound() {
        return historyBound;
    }
}